They are most likely using the open source name to increase their media/marketing coverage, not because they don’t know what it actually means.

Which is why we have to keep fighting misuse, the same way those companies will fight for trademarks.

It is too late to change the name. Just because you and I would have chosen a different name if we could go back in time does not make it OK for you to assert that the name "does not mean anything in the first place".

Since the 1990s there has existed an entire non-profit organization dedicated to clarifying the meaning of the name.